Support high version python to decompile low version pyc

[JANlittle]

Uncompyle6 uses the current Python interpreter version as the default .pyc version, which prevents Python 3.11 from working, even if the .pyc version is 3.8 or lower. I made some small modifications to specify the version of .pyc when generating tokens, which may be helpful. Due to time constraints, I only tested a few pyc file. Sorry for that. :( Also, it maybe need to change xdis/std.py:

from uncompyle6 import PYC_version
_std_api = make_std_api(PYC_version)

[rocky]

I don't understand. I can build uncompyle6 from 3.9 and when I pass it a bytecode file from 3.0 it works.

$ ./bin/uncompyle6 test/bytecode_3.0/00_import.pyc 
# uncompyle6 version 3.9.1.dev0
# Python bytecode version base 3.0 (3131)
# Decompiled from: Python 3.9.16 (main, Dec 13 2022, 19:28:33) 
# [GCC 11.3.0]
# Embedded file name: simple_source/stmts/00_import.py
# Compiled at: 2019-07-10 15:49:35
import sys
from os import path
from os import *
import time as time1, os as os1, http.client as httpclient
if len(__file__) == 0:
    import a.b.c as d, stuff0.stuff1.stuff2.stuff3 as stuff3
# okay decompiling test/bytecode_3.0/00_import.pyc

So what exactly is it that you want to do?

It feels like the only thing this may do is allow one not to have to specify a version somewhere, and I don't see this that important.